How about doing some easy ones, like some of the shoot-'em-ups or platformers which don't have a lot of actual translating to do? Stuff like Sapphire or Doraemon: Nobita's Dorabian Night?
Ogre Battle - Neo Geo Pocket Color
How about starting with games that are 80% English already and go from there? Like the Wizardry games or something else? There is even a thread I got stickied on this. http://www.pcenginefx.com/forums/index.php?topic=14497.msg291374#msg291374